Genuine OEM Volkswagen Mechatronic Unit, part number 02E325025ATZQ3. This complex electronic and hydraulic control unit is responsible for managing the automatic transmission's gear changes and clutch engagement. It is located within the transmission assembly. Features a ZQ3 suffix, indicating a specific variant. Genuine OEM mechatronic units ensure precise calibration and reliable operation, critical for the longevity and performance of the transmission.